diff --git a/tests/UnitTests/X_Issues/Issuse312/InheritanceTest.phpxxx b/tests/UnitTests/X_Issues/Issuse312/Include.phpxxx
similarity index 100%
rename from tests/UnitTests/X_Issues/Issuse312/InheritanceTest.phpxxx
rename to tests/UnitTests/X_Issues/Issuse312/Include.phpxxx
diff --git a/tests/UnitTests/X_Issues/Issuse312/InheritanceTest.php b/tests/UnitTests/X_Issues/Issuse312/InheritanceTest.php
new file mode 100644
index 00000000..b8e2546e
--- /dev/null
+++ b/tests/UnitTests/X_Issues/Issuse312/InheritanceTest.php
@@ -0,0 +1,125 @@
+<?php
+
+//require_once '../../../../../vendor/autoload.php';
+
+if (version_compare(phpversion(), '5.5.0', '>')) {
+
+    class Base
+    {
+        const TEMPLATE = '034_parent.tpl';
+
+        public $id = null;
+
+        public function __construct($id)
+        {
+            $this->id = $id;
+        }
+
+        public function getHTML()
+        {
+            return static::class;
+        }
+    }
+
+    class Child extends Base
+    {
+        const TEMPLATE = '034_child.tpl';
+
+        public function getText()
+        {
+            return $this->getHTML();
+        }
+    }
+
+    class BaseClone extends Base
+    {
+
+    }
+
+    /*
+     * @requires PHP 5.5
+     */
+
+    class InheritanceTest extends PHPUnit_Framework_TestCase
+    {
+        protected $smarty;
+
+        protected function setUp()
+        {
+            chdir(dirname(__FILE__));
+            $this->smarty = new Smarty();
+            $this->smarty->setTemplateDir('./templates');
+            $this->smarty->setCompileDir('./templates_c');
+            $this->smarty->setCacheDir('./cache');
+            $this->smarty->caching = false;
+        }
+
+        /**
+         * @dataProvider providerInheritance
+         * @requires     PHP5.5
+         */
+        public function testInheritance($elements, $assertions)
+        {
+            foreach ($elements as $nr => $element) {
+                $this->smarty->assign('e', $element);
+                $this->assertSame($assertions[ $nr ], $this->smarty->fetch($element::TEMPLATE));
+            }
+        }
+
+        /**
+         * @dataProvider providerInheritance
+         */
+        public function testInheritanceCaching($elements, $assertions)
+        {
+            $this->smarty->caching = true;
+            foreach ($elements as $nr => $element) {
+                $this->smarty->assign('e', $element);
+                $this->assertSame($assertions[ $nr ], $this->smarty->fetch($element::TEMPLATE));
+            }
+        }
+
+        /**
+         * @dataProvider providerInheritance
+         */
+        public function testInheritanceCaching1($elements, $assertions)
+        {
+            $this->smarty->caching = true;
+            foreach ($elements as $nr => $element) {
+                $this->smarty->assign('e', $element);
+                $stat = $this->smarty->isCached($element::TEMPLATE);
+                $this->assertSame($assertions[ $nr ], $this->smarty->fetch($element::TEMPLATE));
+                $this->assertTrue($stat);
+            }
+        }
+
+        public function providerInheritance()
+        {
+            return [[//(#0) This test works as expected
+                     [new Base(1), new Base(2), new BaseClone(3),], ['1 Base', '2 Base', '3 BaseClone',],],
+                    [//(#1) This test works as expected
+                     [new Child(1), new BaseClone(2), //This output is right(!)
+                     ], ['1 Child', '2 BaseClone',],], [//(#2) This test fails
+                                                        [new Child(1), new Child(2), new BaseClone(3),],
+                                                        ['1 Child', '2 Child', '3 BaseClone',
+                                                         //Here the output is "2 Child"
+                                                        ],], [//(#3) This test fails
+                                                              [new Child(1), new BaseClone(2), new Child(3),],
+                                                              ['1 Child', '2 BaseClone', '3 Child',
+                                                               //Here the output is "2 Child"
+                                                              ],], [//(#4) This test fails
+                                                                    [new Child(1), new Child(2), new BaseClone(3),
+                                                                     new Child(4),],
+                                                                    ['1 Child', '2 Child', '3 BaseClone',
+                                                                     //Here the output is also "2 Child"
+                                                                     '4 Child',],], [//(#5) This test fails
+                                                                                     [new BaseClone(1), new Child(2),
+                                                                                      new Child(3), new BaseClone(4),],
+                                                                                     ['1 BaseClone',
+                                                                                      //This output is right(!)
+                                                                                      '2 Child', '3 Child',
+                                                                                      '4 BaseClone',
+                                                                                      //Here the output is "3 Child"
+                                                                                     ],],];
+        }
+    }
+}
\ No newline at end of file